Mais conteúdo relacionado Semelhante a Voluntary Geographic Information And Its Value For Disaster Management (20) Mais de Jan Willem van Eck (20) Voluntary Geographic Information And Its Value For Disaster Management4. VGI research challenges
• What motivates a volunteer?
• What social factors predict participation?
• If empowered, what whould she choose to map?
• …
• Limits, quality, mechanisms, protocol
Twenty years of progress: GISscience in 2010, M.F. Goodchild,
Journal of Spatial Information Science, 2010
7. I AM HERE
(O N A V O L U N T A R Y B A S I S)
VGI level 1
14. I AM HERE
D O I N G W H A T?
SO WHAT?
VGI level 3
19. THE MORE
CONTEXT
IN LOCATION
THE HIGHER THE VALUE
20. MOTIVES?
EASY/FUN
REPUTATION
B E A N (ACTIVE) C I T I Z E N
....
22. Value
• What is the value of water?
• At what level?
• Realtime or historic?
• How good is the source?
24. VGI means more people,
more data,
big data
for small maps
But is the data always right?
26. The crowd is alway right?
• Memoirs of Extrodinary Popular Delusions and
the Madness of Crowds
By Charles Mackey (Tulipomania)
• Would the Beatles have made it at Xfactor?
29. House on Fire
Police officer
Off Duty
Definitely Positive No Way
31. How to leverage crowdsourcing?
Let more data in
and understand how to filter
and build robust systems
44. The more data
available, the more
important the filter is
“The crowd” is simply
“wrong”
Not sure if our brain
allows us to do
anything voluntary
Notas do Editor A socialnetworkonlymakessensenwhenthere are activeparticipants. http://www.newscientist.com/article/dn19200-twitter-mood-maps-reveal-emotional-states-of-america.html Iamhere and having lunch. Memoirs of Extrodinary Popular Delusions and the Madness of Crowds by Charles Mackey (Tulipomania) http://www.slideshare.net/jjavanluik/dactique-implementeren-van-onderwijstechnologieproudlyonloanfrom.... SA Crossing the Chasm, Moore. I likethis model as a basic model of anyinformation system. I likethis model as a basic model of anyinformation system. I likethis model as a basic model of anyinformation system. http://www.esri.com/software/arcgis/extensions/openstreetmap/index.html